imx:display5: Add support for LWN's DISPLAY5 board
This commit provides support for LWN's IMX6Q based DISPLAY5 board.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/board/liebherr/display5/spl.c b/board/liebherr/display5/spl.c
new file mode 100644
index 0000000..0a36e65
--- /dev/null
+++ b/board/liebherr/display5/spl.c
@@ -0,0 +1,247 @@
+/*
+ * Copyright (C) 2017 DENX Software Engineering
+ * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <libfdt.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/mx6-ddr.h>
+#include <asm/arch/mx6-pins.h>
+#include "asm/arch/crm_regs.h"
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/imx-regs.h>
+#include "asm/arch/iomux.h"
+#include <asm/mach-imx/iomux-v3.h>
+#include <environment.h>
+#include <fsl_esdhc.h>
+#include <netdev.h>
+#include "common.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = {
+ .dram_sdclk_0 = 0x00000030,
+ .dram_sdclk_1 = 0x00000030,
+ .dram_cas = 0x00000030,
+ .dram_ras = 0x00000030,
+ .dram_reset = 0x00000030,
+ .dram_sdcke0 = 0x00003000,
+ .dram_sdcke1 = 0x00003000,
+ .dram_sdba2 = 0x00000000,
+ .dram_sdodt0 = 0x00000030,
+ .dram_sdodt1 = 0x00000030,
+
+ .dram_sdqs0 = 0x00000030,
+ .dram_sdqs1 = 0x00000030,
+ .dram_sdqs2 = 0x00000030,
+ .dram_sdqs3 = 0x00000030,
+ .dram_sdqs4 = 0x00000030,
+ .dram_sdqs5 = 0x00000030,
+ .dram_sdqs6 = 0x00000030,
+ .dram_sdqs7 = 0x00000030,
+
+ .dram_dqm0 = 0x00000030,
+ .dram_dqm1 = 0x00000030,
+ .dram_dqm2 = 0x00000030,
+ .dram_dqm3 = 0x00000030,
+ .dram_dqm4 = 0x00000030,
+ .dram_dqm5 = 0x00000030,
+ .dram_dqm6 = 0x00000030,
+ .dram_dqm7 = 0x00000030,
+};
+
+static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = {
+ .grp_ddr_type = 0x000c0000,
+ .grp_ddrmode_ctl = 0x00020000,
+ .grp_ddrpke = 0x00000000,
+ .grp_addds = 0x00000030,
+ .grp_ctlds = 0x00000030,
+ .grp_ddrmode = 0x00020000,
+ .grp_b0ds = 0x00000030,
+ .grp_b1ds = 0x00000030,
+ .grp_b2ds = 0x00000030,
+ .grp_b3ds = 0x00000030,
+ .grp_b4ds = 0x00000030,
+ .grp_b5ds = 0x00000030,
+ .grp_b6ds = 0x00000030,
+ .grp_b7ds = 0x00000030,
+};
+
+/* 4x128Mx16.cfg */
+static const struct mx6_mmdc_calibration mx6_4x256mx16_mmdc_calib = {
+ .p0_mpwldectrl0 = 0x002D0028,
+ .p0_mpwldectrl1 = 0x0032002D,
+ .p1_mpwldectrl0 = 0x00210036,
+ .p1_mpwldectrl1 = 0x0019002E,
+ .p0_mpdgctrl0 = 0x4349035C,
+ .p0_mpdgctrl1 = 0x0348033D,
+ .p1_mpdgctrl0 = 0x43550362,
+ .p1_mpdgctrl1 = 0x03520316,
+ .p0_mprddlctl = 0x41393940,
+ .p1_mprddlctl = 0x3F3A3C47,
+ .p0_mpwrdlctl = 0x413A423A,
+ .p1_mpwrdlctl = 0x4042483E,
+};
+
+/* MT41K128M16JT-125 (2Gb density) */
+static const struct mx6_ddr3_cfg mt41k128m16jt_125 = {
+ .mem_speed = 1600,
+ .density = 2,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 14,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1375,
+ .trcmin = 4875,
+ .trasmin = 3500,
+};
+
+static void ccgr_init(void)
+{
+ struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+ writel(0x00C03F3F, &ccm->CCGR0);
+ writel(0x0030FC3F, &ccm->CCGR1);
+ writel(0x0FFFCFC0, &ccm->CCGR2);
+ writel(0x3FF00000, &ccm->CCGR3);
+ writel(0x00FFF300, &ccm->CCGR4);
+ writel(0x0F0000C3, &ccm->CCGR5);
+ writel(0x000003FF, &ccm->CCGR6);
+}
+
+static void spl_dram_init(void)
+{
+ struct mx6_ddr_sysinfo sysinfo = {
+ /* width of data bus:0=16,1=32,2=64 */
+ .dsize = 2,
+ /* config for full 4GB range so that get_mem_size() works */
+ .cs_density = 32, /* 32Gb per CS */
+ /* single chip select */
+ .ncs = 1,
+ .cs1_mirror = 0,
+ .rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
+ .rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
+ .walat = 1, /* Write additional latency */
+ .ralat = 5, /* Read additional latency */
+ .mif3_mode = 3, /* Command prediction working mode */
+ .bi_on = 1, /* Bank interleaving enabled */
+ .sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
+ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
+ .pd_fast_exit = 1, /* enable precharge power-down fast exit */
+ .ddr_type = DDR_TYPE_DDR3,
+ .refsel = 1, /* Refresh cycles at 32KHz */
+ .refr = 7, /* 8 refresh commands per refresh cycle */
+ };
+
+ mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+ mx6_dram_cfg(&sysinfo, &mx6_4x256mx16_mmdc_calib, &mt41k128m16jt_125);
+}
+
+#ifdef CONFIG_SPL_SPI_SUPPORT
+static void displ5_init_ecspi(void)
+{
+ displ5_set_iomux_ecspi_spl();
+ enable_spi_clk(1, 1);
+}
+#else
+static inline void displ5_init_ecspi(void) { }
+#endif
+
+#ifdef CONFIG_SPL_MMC_SUPPORT
+static struct fsl_esdhc_cfg usdhc_cfg = {
+ .esdhc_base = USDHC4_BASE_ADDR,
+ .max_bus_width = 8,
+};
+
+int board_mmc_init(bd_t *bd)
+{
+ displ5_set_iomux_usdhc_spl();
+
+ usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+ gd->arch.sdhc_clk = usdhc_cfg.sdhc_clk;
+
+ return fsl_esdhc_initialize(bd, &usdhc_cfg);
+}
+#endif
+
+void board_init_f(ulong dummy)
+{
+ ccgr_init();
+
+ arch_cpu_init();
+
+ gpr_init();
+
+ /* setup GP timer */
+ timer_init();
+
+ displ5_set_iomux_uart_spl();
+
+ /* UART clocks enabled and gd valid - init serial console */
+ preloader_console_init();
+
+ displ5_init_ecspi();
+
+ /* DDR initialization */
+ spl_dram_init();
+
+ /* Clear the BSS. */
+ memset(__bss_start, 0, __bss_end - __bss_start);
+
+ /* load/boot image from boot device */
+ board_init_r(NULL, 0);
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+ /* Default boot sequence SPI -> MMC */
+ spl_boot_list[0] = spl_boot_device();
+ spl_boot_list[1] = BOOT_DEVICE_MMC1;
+ spl_boot_list[2] = BOOT_DEVICE_UART;
+ spl_boot_list[3] = BOOT_DEVICE_NONE;
+
+#ifdef CONFIG_SPL_ENV_SUPPORT
+ /* 'fastboot' */
+ const char *s;
+
+ env_init();
+ env_load();
+
+ s = env_get("BOOT_FROM");
+ if (s && strcmp(s, "ACTIVE") == 0) {
+ spl_boot_list[0] = BOOT_DEVICE_MMC1;
+ spl_boot_list[1] = spl_boot_device();
+ }
+#endif
+}
+
+void reset_cpu(ulong addr) {}
+
+#ifdef CONFIG_SPL_LOAD_FIT
+int board_fit_config_name_match(const char *name)
+{
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_SPL_OS_BOOT
+/* Return: 1 - boot to U-Boot. 0 - boot OS (falcon mode) */
+int spl_start_uboot(void)
+{
+ /* break into full u-boot on 'c' */
+ if (serial_tstc() && serial_getc() == 'c')
+ return 1;
+
+#ifdef CONFIG_SPL_ENV_SUPPORT
+ if (env_get_yesno("boot_os") != 1)
+ return 1;
+#endif
+ return 0;
+}
+#endif